Kieran takes off from rest down a 50m high, 10 slope, on his jet powered skis. the skis have a thrust of 280 n parallel to the surface of the slope. the combined mass of skis and kieran is 50 kg. (the fuel mass is negligible). kierans speed at the bottom is 40m/s. what is the coefficient of kinetic friction of his skis on snow?

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

1. study the scenario. the particles in some system are moving around quickly. a few minutes later, the particles are moving, on average, more slowly. how does this change in motion affect the temperature of the system? the temperature of the system did not change. the speed of the particles does not affect temperature, the number of particles affects the temperature. the temperature of the system is lower now than it was initially. faster moving particles result in a higher temperature for the system. the temperature of the system is higher now than it was initially. slower moving particles result in a higher temperature for the system. the temperature of the system did not change. the speed of the particles has no effect on the temperature, only the type of atom affects the temperature.

How do you find the density of a cork